Carriage-jack



UNITED STATES PATENT OFFICE- WILLIAM MGKENZIE, OF PERRY, NEW YORK.

CARRIAGE-JACK.

SPECIFICATION forming part of Letters Patent No. 260,770, dated July 11, 1882. Application filed May 26, 1882. (No model.)

1'0 all whom it may concern:

' Be it known that I, WILLIAM MCKENZIE, of Perry, Wyoming county, New York, have invented a certain new and useful Improvement in Carriage-Jacks; and I do hereby declare that the following is a full, clear, and exact description of thesame, reference being had to the'accompanyin g drawings, in which Figure 1 is a side elevation of my improved 7 with fixed journals projecting on both sides,

resting in the slots and adjustable higher or lower in the notches, as hereinafter more fully described.

In the drawings, A shows a base-piece; B B, two vertical standards, rising therefrom and connected at the top by tie-plates O O. D shows the slide or follower, and E shows the cam provided with a lever, E, these parts being similar to those in this class of carriagejacks.

My improvement is as follows:

G G are two iron plates, screwed to the out-' side of the standards B.

b b are vertical slots in the plates, extending nearly their whole length. Similar coincident slots are made through the sides of the standards.

0 c are hook-notches at one side of theslots,

40- open at the top, and forming the bearings for the journals of the cam. v

d d are the journals, made fast with the cam projecting on opposite sides, passing through the slots 1) b and resting in the notches c c.

In use the cam is pressed down by the hand or foot and the follower is raised thereby. To adjust the follower to higher axles, the journals d d are slipped out of the notches in which they rest, the cam is raised, carrying the journals up in the slots, and when the proper height is reached the journals are set into other notches, as indicated by the dotted lines in Fig. 1. The change is made with great facility, and the adjustment is simple and effective.

I am aware that various means of adjustmenthave before been used in this class of jacks. The novelty in this invention consists in the use of the plates G G, attached to the sides of the standards, provided with the in closed slots, forming guides to the journals as they are moved up and down, and having hookshaped notches on one side of the slots, forming bearings for the journals at any height to which they may be adj usted.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, in a carriage-jack, of the two metallic plates G G, set on opposite sides of the standards B B,provided with the inclosed slots b I) and hook-shaped notches c 0 on one side of the slots,and the journals d d, attached to the cam E and projecting on opposite sides, the slots acting as guides to the journals in moving up and down therein and the notches serving as bearin gs to the journals at different adjustments, as herein shown'and described. 1

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

WM. MCKENZIE.

Witnesses Y E. M. WYoKoFF, F. H. WYcKoFF. 

